都市圈城市活力评价与影响机制研究——以郑州都市圈为例

Evaluation and Influence Mechanism of Urban Vitality in Metropolitan Area:A Case Study of Zhengzhou Metropolitan Area

郑州都市圈由于其独特的地理位置,在国家东西部发展政策以及国内大循环体系的构建中发挥着重要的作用,但是目前关于郑州都市圈及其各市发展情况及影响机制研究较少.因此,本文以城市空间活力作为城市发展水平的指标,选取2012—2020年郑州都市圈夜间灯光数据,利用ArcGIS软件对栅格数据处理,得到郑州都市圈各城市活力的可视化表达;同时运用SPSS软件对城市空间活力和2020年各市经济、人口、交通数据进行相关性分析.得到以下结论:①郑州都市圈各城市活力发展水平不均衡,“一城独大”现象明显;②城市活力呈现从中心向外围依次递减的特征,中心城市对周边区域有明显的辐射带动作用;③城市的人口密度、经济发展水平、道路通达性、功能设施密度和多样性等对城市活力发展水平具有正向影响.依据以上结论对郑州都市圈的发展提出优化的政策建议.

Due to the unique geographical location,Zhengzhou metropolitan area plays an important role in the development policy of the country’s east and west and the construction of the domestic large circulation system.However,there are few studies on the development and influence mechanism of Zhengzhou metropolitan area and its cities.Therefore,this paper takes urban spatial vitality as an indicator of urban development level,selects the night light data of Zhengzhou metropolitan area from 2012 to 2020,and uses ArcGIS software to process the raster data to obtain the visual expression of the urban vitality of Zhengzhou metropolitan area.At the same time,SPSS software is used to analyze the correlation between urban spatial vitality and the economic,population and traffic data of cities in 2020.The following conclusions are drawn:①The development level of urban vitality in Zhengzhou metropolitan area is uneven,and the phenomenon of“one city dominating the whole region”is obvious;②The urban vitality shows the characteristics of decreasing from the center to the periphery,and the central city has an obvious radiation and driving effect on the surrounding areas;③The population density,economic development level,road accessibility,functional facility density and diversity of the city have positive impacts on the development level of urban vitality.Based on the above conclusions,the optimized policy suggestions for development of Zhengzhou metropolitan area are provided.